One day Mori Kogoro's private detective agency receives a blackmail call. It turns out that the caller has dialed the wrong number. Conan is able to identify the voice on the phone, it's similar to that of his old friend Heiji, who's also a high school detective but in Osaka. They join once again fo...
Source: MyAnimeList
Curated recommendations for fans of Detective Conan OVA 06: Follow the Vanished Diamond! Conan & Heiji vs. Kid!.
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